on the administration to do is come forward with a new structure and to articulate how the rule of law will support protecting the country in this new threat environment. there wasn't a case for treating this brother as an enemy combatant and i think it was very premature for my senate colleagues to call for him to be treated that way. >> congressman, thank you very much. >>> up next the attorney for american wife of tamerlan tsarnaev said she had no knowledge of the attacks. does that add up? and the destructive nature of the pressure cooker bomb and what can be done to stop them? we have a special investigation. omnipotent of opportunity. you know how to mix business... with business. and you...rent from national. because only national lets you choose any car in the aisle. and go. you can even take a full-size or above. and still pay the mid-size price. i could get used to this. [ male announcer ] yes, you could business pro. yes, you could. go national. go like a pro. >>> if you are just joining us, i want to update you on the investigation in to the boston marathon bombings. dzhokh